Mesa/Boogie Rectifier® Cabinet Designs are known worldwide for their HUGE sound. These Closed Back Enclosures are Tight, Punchy and Incredibly Articulate. Each come stock with our Custom, English made Celestion Vintage 30 speakers. Made with 5/8" ply void-free, marine grade, Baltic Birch ply. Super strong rabbet corners are glued and nailed and all backs are gasket sealed to ensure an air-tight seal. Baffles are fitted with superior dado joint construction and braced. Grilles are wrapped around a separate grille board, not the baffle board. Grille material is made of strong twisted jute dipped in a special coating that filters top end for a sweeter response. If you need a cabinet that not only suits your playing style but enhances it, then plug your amp into a Rectifier cab!